6-Amino-3-bromo-2-(difluoromethyl)pyridine-4-sulfonamide
2-Amino-5-chloro-4-(difluoromethyl)-3-fluoropyridine
6-Amino-4-(difluoromethyl)-2-fluoropyridine-3-acetic acid
5-Amino-2-(difluoromethyl)-3-fluoropyridine-4-acetic acid
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